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mongodb group values by multiple fields

... { "book" : "book4", "count" : 1 }, { "book" : "book5", "count" : 1 ...
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Is sizeof(bool) defined in the C++ language standard?

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Getting and removing the first character of a string

... answered Mar 14 '14 at 9:41 bartektartanusbartektartanus 11.1k33 gold badges6363 silver badges8585 bronze badges ...
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Return two and more values from a method

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Append column to pandas dataframe

... 45 Or pd.concat([dat1, dat2], axis=1) in this case. – DSM Dec 16 '13 at 3:35 ...
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Create a variable name with “paste” in R?

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std::next_permutation Implementation Explanation

...td:next_permutation was implemented so I extracted the the gnu libstdc++ 4.7 version and sanitized the identifiers and formatting to produce the following demo... ...
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Is there a JavaScript strcmp()?

... leaf 13.5k66 gold badges4848 silver badges7777 bronze badges answered Jul 24 '09 at 18:38 newacctnewacct ...
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How can I remove a flag in C?

... 342 Short Answer You want to do an Bitwise AND operation on the current value with a Bitwise NOT o...
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What is the easiest way to push an element to the beginning of the array?

... answered May 22 '11 at 1:48 mu is too shortmu is too short 385k6262 gold badges757757 silver badges727727 bronze badges ...